E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
← Leave quiz
88M Tractor Trailer and HEMTT Practice Test
Practice mode
Question
1
of 25
QUESTION 1 / 25
Which of the following actions is NOT performed prior to coupling procedures?
Choose one answer below.
A
Align the tractor with the trailer
✓
B
Back up until you hear a click
✓
C
Inspect connections for damage
✓
D
Secure the area around the coupling site
✓
QUESTION 2 / 25
What component is used to secure a container to the M872A?
Choose one answer below.
A
Curb locks
✓
B
Twist lock fasteners
✓
C
Safety chains
✓
D
Magnetic clamps
✓
QUESTION 3 / 25
How many 12 VDC storage batteries are in the M1120?
Choose one answer below.
A
2
✓
B
3
✓
C
4
✓
D
5
✓
QUESTION 4 / 25
The M872A4 has a ____________ ton capacity.
Choose one answer below.
A
30
✓
B
34
✓
C
40
✓
D
42
✓
QUESTION 5 / 25
What type of engine is utilized in the M1120?
Choose one answer below.
A
V8 Diesel engine
✓
B
Inline 6-cylinder gasoline engine
✓
C
V6 Diesel engine
✓
D
Inline 6-cylinder diesel engine
✓
QUESTION 6 / 25
What is a key benefit of regular maintenance on tractor trailers?
Choose one answer below.
A
Increased cargo space
✓
B
Enhanced fuel efficiency
✓
C
Lower insurance costs
✓
D
Improved aesthetic appearance
✓
QUESTION 7 / 25
How many quarts of engine oil can the M1120 engine hold?
Choose one answer below.
A
36 quarts
✓
B
42 quarts
✓
C
48 quarts
✓
D
50 quarts
✓
QUESTION 8 / 25
What is the capacity of the M1120 in terms of maximum speed?
Choose one answer below.
A
40 mph
✓
B
50 mph
✓
C
62 mph
✓
D
70 mph
✓
QUESTION 9 / 25
In an off-road application, what is the maximum pulling load capacity of the M1120?
Choose one answer below.
A
25,000 pounds
✓
B
30,000 pounds
✓
C
35,000 pounds
✓
D
40,000 pounds
✓
QUESTION 10 / 25
What is the M1120's maximum fording depth?
Choose one answer below.
A
36 inches
✓
B
48 inches
✓
C
60 inches
✓
D
72 inches
✓
QUESTION 11 / 25
How many 12-volt receptacles are provided in the cab of the M1120?
Choose one answer below.
A
1
✓
B
2
✓
C
3
✓
D
4
✓
QUESTION 12 / 25
How many braking functions does a M915 have?
Choose one answer below.
A
2
✓
B
3
✓
C
4
✓
D
5
✓
QUESTION 13 / 25
What does the acronym CWS stand for in relation to the M915?
Choose one answer below.
A
Collision Warning System
✓
B
Centralized Weight System
✓
C
Controlled Wheel Suspension
✓
D
Crucial Wiring System
✓
QUESTION 14 / 25
How many air reservoirs are included in the M1120 air system?
Choose one answer below.
A
3
✓
B
4
✓
C
5
✓
D
6
✓
QUESTION 15 / 25
What is the purpose of the M872A's adjustable bumper?
Choose one answer below.
A
Enhance aerodynamics
✓
B
Improve visibility
✓
C
Allow access to spare tire
✓
D
Provide additional storage
✓
QUESTION 16 / 25
What is the cruising range on a full tank for the M915?
Choose one answer below.
A
300 miles
✓
B
400 miles
✓
C
500 miles
✓
D
600 miles
✓
QUESTION 17 / 25
What type of vehicle is the M1120 classified as?
Choose one answer below.
A
Utility truck
✓
B
Tractor trailer
✓
C
Armored vehicle
✓
D
Heavy equipment transporter
✓
QUESTION 18 / 25
What is the purpose of the ether canister on the M1120?
Choose one answer below.
A
To improve fuel efficiency
✓
B
To aid in cold weather starting
✓
C
To assist in lubrication
✓
D
To control air pressure
✓
QUESTION 19 / 25
The M872A4 is how many feet long?
Choose one answer below.
A
32
✓
B
34
✓
C
36
✓
D
38
✓
QUESTION 20 / 25
How many towing eyes are equipped on the M1120?
Choose one answer below.
A
2
✓
B
3
✓
C
4
✓
D
5
✓
QUESTION 21 / 25
The LHS is capable of loading and unloading the flatrack from uneven ground slopes of how many degrees from the vehicle's lateral and horizontal axis?
Choose one answer below.
A
3 degrees
✓
B
5 degrees
✓
C
7 degrees
✓
D
10 degrees
✓
QUESTION 22 / 25
How many batteries are contained in the LHS battery box?
Choose one answer below.
A
2
✓
B
3
✓
C
4
✓
D
5
✓
QUESTION 23 / 25
When hauling heavy loads or driving up hills, how many cylinders should be used to brake on the M915?
Choose one answer below.
A
2 or 3
✓
B
4 or 6
✓
C
1 or 2
✓
D
3 or 5
✓
QUESTION 24 / 25
What can happen if the M1120 operates with the suspension dumped?
Choose one answer below.
A
Improved fuel efficiency
✓
B
Damage to the suspension system
✓
C
Faster acceleration
✓
D
Increased stability
✓
QUESTION 25 / 25
What should an operator do to check the connection after coupling an M915 tractor and M872 trailer?
Choose one answer below.
A
Inspect the coupling visually
✓
B
Test brakes with Johnny Bar
✓
C
Ensure air hoses are connected
✓
D
Check the electrical connections
✓
← Previous
0 of 25 answered
Next question →
Finish & see results →